Senior Packaging Materials R&D Engineer

Monolithic Power Systems, Inc. (MPS) is one of the fastest growing companies in the Semiconductor industry. We are worldwide technical leaders in Integrated Power Semiconductors and Systems Power delivery architectures. At MPS, we cultivate creativity, are passionate about sustainability, and are committed to providing leading-edge products and innovation to our customers. Our portfolio of technology helps power our world ---come join our team and see how YOU can make a difference.

Summary Job Description: The candidate will drive innovation and performance improvement in key materials such as epoxy, molding compounds, and underfill materials. A main responsibility will be to develop and qualify 2nd source suppliers domestically, ensuring a resilient, cost-effective, and high-quality supply chain for advanced semiconductor packaging.

Responsibilities Lead the research and development of next-generation packaging materials, including but not limited to: Epoxy die-attach adhesives, Molding compounds for fan-out, SiP, and other advanced packages, underfill materials. Define material specifications, performance targets (thermal, mechanical, electrical, reliability), and qualification plans. Conduct deep-dive technical analysis on material properties, failure mechanisms, and process compatibility. Collaborate with material suppliers, internal process engineering, and reliability teams to optimize material formulation and performance. Identify, evaluate, and onboard qualified domestic materials suppliers as 2nd sources. Lead the technical assessment, including material characterization, comparative testing, and process window evaluation against baseline materials. Manage the full qualification cycle for new suppliers/materials, from initial samples to production release, ensuring they meet all quality, reliability, and cost requirements.

Requirements Deep expertise in chemistry, formulation, processing, and failure modes of key packaging polymers. Strong experience in material characterization techniques (TGA, DMA, rheology, etc.) and reliability testing (MSL, TCT, HAST, etc.). Master’s or PhD degree in Materials Science, Chemical Engineering, Polymer Science, Chemistry, or a closely related field. Master’s or PhD degree with 5+ years related experience.

Monolithic Power Systems, Inc. (MPS) is an Equal Opportunity Employer and embraces diversity in our employee population. It is the policy of MPS to provide equal opportunity to all qualified applicants and employees without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, protected veteran status or special disabled veteran, marital status, pregnancy, genetic information, or any other legally protected status.